Kittens need to induce vomiting and gastric lavage immediately after eating rat poison. You can give the kitten concentrated salt water to help induce vomiting. If the kitten cannot vomit, it is best to send it to a pet hospital for treatment in time to avoid life danger. There are many types of rat poison, some of which are highly toxic and can cause poisoning and death of cats in a short period of time. Therefore, you should keep an eye on your cat and do not put rat poison in places where cats can easily access it.